Spruill, the D-backs' No. 10 prospect, will pitch out of the bullpen for now. The D-backs' pitching is in a bit of flux after using nine pitchers in their 14-inning game with the Indians on Tuesday night.

"We thought bringing Spruill in would protect us from getting in a real bad situation tonight," D-backs manager Kirk Gibson said before Wednesday's game with Cleveland.

After using all of his relievers Tuesday night, Gibson had to bring in starter Josh Collmenter to pitch the 14th inning. Collmenter had been scheduled to start Friday against the Padres, but instead he will be pushed back to Saturday while Brandon McCarthy's start will move up from Saturday to Friday.

Gibson chose to use Collmenter rather than McCarthy in relief because Collmenter is more used to pitching in relief while McCarthy is more regimented in how he gets ready to pitch and likely would have needed more time to get ready.

With the D-backs having two off days this week, McCarthy will still get an extra day of rest despite having his start moved up.